Pressure relief device for chemical transport ship

Abstract

The invention relates to the technical field of chemical pressure relief, and particularly discloses a pressure relief device for a chemical transport ship, which comprises a storage tank, a rupture disk device is fixedly connected to the center of the top of the storage tank, and a protection device is fixedly connected to one side of the top of the storage tank. The side, away from the protection device, of the top of the storage tank is fixedly connected with a breather valve, one side of the breather valve is fixedly connected with a pressure relief gas conveying pipe, and the end, away from the breather valve, of the pressure relief gas conveying pipe is fixedly connected with a stored object processing mechanism. The protection device can block leakage through the structure of the protection device so that the leakage cannot be directly sprayed upwards to the atmosphere, the difficulty of subsequent cleaning is greatly reduced, meanwhile, the protection device and the rupture disk device can be matched with each other to play a role in sealing the rupture disk when the rupture disk is operated by mistake, and internal substances are prevented from being leaked. According to the pressure relief device for the chemical transport ship, the purposes that the interior of the pressure relief gas delivery pipe is cleaned in time, and bonding and accumulation are prevented, the pressure relief rate is hindered and misoperation of the rupture disk is prevented are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical pressure relief, in particular to a pressure relief device for chemical transport ship. BACKGROUND

[0002] The prototype of the pressure relief device can be traced back to the safety valve invented by French physicist Papin in 1680, which is used to prevent steam boiler explosion. In 1840, the United Kingdom passed legislation to require pressure equipment to be installed with safety valve, and in 1875, American scholars began to systematically study the relief dynamics of pressure relief device. This stage is mainly based on the structure of heavy hammer and first spring, which realizes pressure control through mechanical force balance, but is limited by material strength, and can only meet the needs of low pressure scene. Since the 20th century, the rapid development of petrochemical industry, nuclear power and other industries has promoted the upgrading of pressure relief device to high precision and high reliability.

[0003] The current pressure relief device for chemical transport ship still has the problem that the rupture disc is corroded and the operation is wrong, resulting in leakage, and the dust in the relief gas pipe of the breather valve is easy to stick, which will cause unstable pressure relief after long-term use. SUMMARY

[0004] In order to achieve the above purpose, the present application is realized by the following technical scheme: a pressure relief device for chemical transport ship, comprising a storage tank, a rupture disc device is fixedly connected at the top center of the storage tank, a protection device and a breather valve are respectively fixedly connected at both sides of the top of the storage tank, a relief gas pipe is communicated with one side of the breather valve, and a storage material processing mechanism is communicated with one end of the relief gas pipe away from the breather valve. The protection device comprises a protection device sliding pipe, a protection device sliding hole is formed in one side of the protection device sliding pipe, a protection device fixed rod is slidably connected with the protection device sliding hole in one side of the protection device sliding pipe, a sealing cover is fixedly connected with one end of the protection device fixed rod away from the protection device sliding pipe, a limiting groove is formed in the bottom of the sealing cover, a protection device limiting block is fixedly connected with the top of the protection device sliding pipe, the sealing cover of the protection device can block the spray to high altitude when the gas leaks, the rupture disc will burst when the internal pressure is too high, the dust leakage in the storage tank 1 will be sprayed out to generate a force to quickly push the sealing cover upward, and the sealing cover will be above the leakage dust spray outlet during the whole spraying process. The sealing cover can well block the leakage gas or dust from directly spraying to high altitude, thereby reducing the cleaning pressure of the subsequent cleaning work of the staff. When the gas pressure in the storage tank decreases, the leakage dust spraying force decreases, and the sealing cover can move downward until the gap caused by the bursting of the rupture disc is covered again, thereby maximizing the remaining storage material in the storage tank.

[0005] Preferably, the bottom of the sliding tube of the protection device is fixedly connected with the storage tank, and the inner wall of the limiting groove is slidingly connected with the bursting disc device.

[0006] Preferably, the sliding tube of the protection device comprises a protection device tube body, the inner wall of the protection device tube body is slidingly connected with a circular slide block, the bottom of the circular slide block is fixedly connected with a first magnetic sheet, the bottom of the first magnetic sheet is fixedly connected with a first spring, the bottom of the first spring is fixedly connected with a second magnetic sheet, when the dust gas pressure inside the storage tank decreases, the first magnetic sheet is pulled by the magnetic force of the second magnetic sheet to drive the circular slide block to move downward as a whole, the sealing cover is driven to press downward until the limiting groove of the sealing cover can be re-closed with the bursting disc device to seal the broken hole, thereby retaining the storage inside the storage tank to the maximum extent, and economic losses are reduced to the maximum extent.

[0007] Preferably, the protection device fixed rod is slidingly connected with the protection device tube body, and one side of the circular slide block is fixedly connected with the protection device fixed rod.

[0008] Preferably, the bottom of the protection device tube body is fixedly connected with the storage tank, and the bottom of the second magnetic sheet is fixedly connected with the storage tank.

[0009] Preferably, the pressure relief gas conveying pipe comprises a pressure relief gas conveying pipe body, the bottom of the pressure relief gas conveying pipe body is fixedly connected with an electric sliding rail in a penetrating manner, a sliding ring is sleeved and slidingly connected on the electric sliding rail, a second washing device fixed rod is fixedly connected on one side of the sliding ring, and an electric annular brush is fixedly connected on the end of the second washing device fixed rod away from the sliding ring, and one end of the electric sliding rail is fixedly connected with an electric sliding rail power supply. When the breather valve needs to be depressurized due to high pressure of dust in the storage tank, the dust is guided into the pressure relief gas conveying pipe and then into the storage processing mechanism, and part of the dust is adhered to the inner wall of the pressure relief gas conveying pipe body in the process of guiding the dust into the storage processing mechanism.

[0010] Preferably, the bottom of the pressure relief gas conveying pipe body is fixedly connected with the storage processing mechanism, and the bottom of the electric sliding rail power supply is fixedly connected with the storage processing mechanism.

[0011] Preferably, the bursting disc device comprises a bottom limiting ring, a bursting disc is fixedly connected to the top of the bottom limiting ring, a limiting ring is fixedly connected to the top of the bursting disc, a sealing groove is formed in one side of the top of the bottom limiting ring, when the bursting disc malfunctions due to corrosion, the internal space is well sealed by the interaction of the sealing groove, the limiting ring, the sealing cover and the limiting groove, preventing leakage.

[0012] Preferably, the limiting ring is slidably connected with the inner wall of the limiting groove, and the inner wall of the sealing groove is slidably connected with the sealing cover.

[0013] The application provides a pressure relief device for a chemical transport ship. 1. The pressure relief device for the chemical transport ship is provided with a protection device, when the internal pressure is too high, the bursting disc will burst, after the bursting disc bursts, the dust in the storage tank will leak from the burst opening of the bursting disc device, the huge ejection force generated by the ejection will quickly push the sealing cover of the protection device upward, and the sealing cover will be above the dust leakage ejection port during the entire ejection process, the sealing cover can well block the leakage gas or dust from being directly ejected into the high altitude, thereby reducing the cleaning pressure for the subsequent cleaning work of the staff.

[0014] 2. The pressure relief device for the chemical transport ship is provided with a protection device, when the internal dust pressure of the storage tank decreases, the first magnetic sheet is pulled and drives the circular sliding block to move downward as a whole under the magnetic force of the second magnetic sheet, the sealing cover is driven to be pressed downward until the limiting groove of the sealing cover can re-close the burst opening of the bursting disc device, thereby retaining the storage in the storage tank to the maximum extent, and reducing the economic loss to the maximum extent.

[0015] 3. The pressure relief device for the chemical transport ship is provided with a washing device, when the breather valve needs to reduce pressure due to high pressure of the dust in the storage tank 1, part of the dust will be introduced into the pressure relief gas conveying pipe and then into the storage treatment mechanism, part of the dust will stick to the inner wall of the pressure relief gas conveying pipe during the introduction of the dust into the storage treatment mechanism, when the pressure reduction is completed, the electric sliding rail is powered on, the sliding ring slides along the electric sliding rail and rotates at the same time, and moves back and forth, so as to wash the dust sticking to the inner wall of the pressure relief gas conveying pipe, so that the inner wall of the pressure relief gas conveying pipe remains clean, effectively preventing dust accumulation from affecting the pressure relief work of the breather valve.

[0016] 4. The pressure relief device for the chemical transport ship is provided with a bursting disc device, when the bursting disc malfunctions due to corrosion, the internal space is well sealed by the interaction of the sealing groove, the limiting ring, the sealing cover and the limiting groove, preventing leakage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the pressure relief device for the chemical transport ship of the present application; Figure 2 It is the structure schematic diagram of the protection device of the present application; Figure 3 It is the external structure schematic diagram of the protection device of the present application; Figure 4 It is the enlarged structure schematic diagram of part C of the present application; Figure 5 It is the structure schematic diagram of the sealing cover of the present application; Figure 6 It is the internal structure schematic diagram of the pressure relief gas conveying pipe of the present application; Figure 7 It is the enlarged structure schematic diagram of part B of the present application; Figure 8 It is the internal structure schematic diagram of the protection device of the present application; Figure 9 It is the enlarged structure schematic diagram of part A of the present application.

[0018] In the figure: 1, storage tank; 2, bursting disc device; 21, bursting disc; 22, bottom limiting ring; 23, limiting ring; 24, sealing groove; 3, protection device; 31, sealing cover; 32, protection device sliding tube; 321, second magnetic sheet; 322, first spring; 323, protection device tube body; 324, first magnetic sheet; 325, circular sliding block; 33, protection device limiting block; 34, protection device fixing rod; 35, protection device sliding hole; 36, limiting groove; 4, breather valve; 5, pressure relief gas conveying pipe; 51, pressure relief gas conveying pipe body; 52, electric sliding rail; 53, electric sliding rail power supply; 54, sliding ring; 55, second washing device fixing rod; 56, electric annular brush; 6, storage material processing mechanism. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-5 The present application provides a technical solution: comprising a storage tank 1, the top center of the storage tank 1 is fixedly connected with a bursting disc device 2, the top of the storage tank 1 is fixedly connected with a protection device 3 and a breather valve 4 on both sides of the bursting disc device 2 respectively, the breather valve 4 is communicated with a pressure relief gas conveying pipe 5 on one side, and the pressure relief gas conveying pipe 5 is communicated with a storage material processing mechanism 6 at the end away from the breather valve 4; The protection device 3 includes a protection device sliding pipe 32, one side of the protection device sliding pipe 32 is provided with a protection device sliding hole 35, and the protection device sliding pipe 32 is slidably connected with a protection device fixing rod 34 through the protection device sliding hole 35 on one side.

[0021] The whole work is stored by putting the storage into the storage tank 1, the burst disc device 2 is used to deal with the emergency in the transportation process, the protection device 3 is used to deal with the possible fault of the burst disc device 2, and the breathing valve 4 is usually used to carry out pressure relief and pressure increase of the storage in the storage tank 1 in the conventional treatment. When pressure relief is needed, part of the storage needs to be introduced into the storage treatment mechanism 6 for treatment work, when pressure increase is needed, external air is introduced into the storage tank 1 to increase the internal pressure, so as to protect the safety of the storage tank 1, prevent the storage tank 1 from being broken due to excessive internal pressure or being compressed due to internal pressure being lower than external pressure, and if the internal pressure is too high, the burst disc 21 will burst, after the burst disc 21 bursts, the dust in the storage tank 1 will leak from the burst hole of the burst disc device 2, and the great ejection force generated by the ejection will quickly push the sealing cover 31 of the protection device 3 upwards. During the ejection process, the sealing cover 31 will always be above the dust leakage ejection port, and the sealing cover 31 can well block the leakage gas or dust from being directly ejected into the high altitude, thereby reducing the cleaning pressure of the subsequent cleaning work of the staff. When the internal pressure of the storage tank 1 decreases, the ejection force of the leaked dust decreases, and the sealing cover 31 can move downward until the gap generated by the burst of the burst disc 21 is covered again, thereby maximizing the remaining storage in the storage tank 1.

[0022] Please refer to Figures 1-6 The protection device sliding pipe 32 is fixedly connected with the storage tank 1, the inner wall of the limiting groove 36 is slidably connected with the burst disc device 2, the protection device sliding pipe 32 includes a protection device pipe body 323, the inner wall of the protection device pipe body 323 is slidably connected with a circular slide block 325, the bottom of the circular slide block 325 is fixedly connected with a first magnetic sheet 324, the bottom of the first magnetic sheet 324 is fixedly connected with a first spring 322, the bottom of the first spring 322 is fixedly connected with a second magnetic sheet 321, the protection device fixing rod 34 is slidably connected with the protection device pipe body 323, one side of the circular slide block 325 is fixedly connected with the protection device fixing rod 34, the bottom of the protection device pipe body 323 is fixedly connected with the storage tank 1, and the bottom of the second magnetic sheet 321 is fixedly connected with the storage tank 1.

[0023] When the dust leaks, the dust spray impact on the sealing cover 31 of the protection device 3 when the rupture disc device 2 breaks, because the impact force when the dust explodes causes the inner wall of the limiting groove 36 opened on the sealing cover 31 to separate from the rupture disc device 2, at the same time the sealing cover 31 is impacted upward by the dust impact and lifted, the sealing cover 31 drives the protection device fixing rod 34 to move upward, so at this time the protection device fixing rod 34 drives the circular slide block 325 in the protection device tube 323 to slide upward, at the same time because of the impact of the impact force of the dust spray, the first magnetic sheet 324 is instantly released from the magnetic attraction of the second magnetic sheet 321, so that the first spring 322 can simultaneously push the circular slide block 325 upward to move quickly, thereby driving the protection device fixing rod 34 to move upward quickly, so that the sealing cover 31 moves upward to prevent it from being directly contacted with the impact force of the dust spray at the first time, thereby achieving the effect of protecting the sealing cover 31 from being damaged by the impact force of the dust, at the same time when the sealing cover 31 is blocked by the protection device limiting block 33 to reach the top of the protection device sliding tube 32, it can block the dust from flying directly into the atmosphere, when the dust gas pressure in the storage tank 1 decreases, the first magnetic sheet 324 is pulled by the magnetic force of the second magnetic sheet 321 to drive the circular slide block 325 to move downward as a whole, the sealing cover 31 is driven to press downward until the limiting groove 36 of the sealing cover 31 can re-close the break of the rupture disc device 2, thereby retaining the storage in the storage tank 1 to the greatest extent, thereby minimizing economic losses.

[0024] Please refer to Figures 1-9 , the present application provides a technical solution: the pressure relief gas pipeline 5 includes a pressure relief gas pipeline tube 51, the bottom of the pressure relief gas pipeline tube 51 is fixedly connected with an electric sliding rail 52, the electric sliding rail 52 is sleeved and slidably connected with a sliding ring 54, one side of the sliding ring 54 is fixedly connected with a washing device fixing rod two 55, the end of the washing device fixing rod two 55 away from the sliding ring 54 is fixedly connected with an electric annular brush 56, one end of the electric sliding rail 52 is fixedly connected with an electric sliding rail power supply 53, the bottom of the pressure relief gas pipeline tube 51 is fixedly connected with a storage material storage and processing mechanism 6, the bottom of the electric sliding rail power supply 53 is fixedly connected with the storage material storage and processing mechanism 6, the rupture disc device 2 includes a bottom limiting ring 22, the top of the bottom limiting ring 22 is fixedly connected with a rupture disc 21, the top of the rupture disc 21 is fixedly connected with a limiting ring 23, a sealing groove 24 is formed on one side of the top of the bottom limiting ring 22, the limiting ring 23 is slidably connected with the inner wall of the limiting groove 36, and the inner wall of the sealing groove 24 is slidably connected with the sealing cover 31.

[0025] When the breathing valve 4 needs to reduce the pressure because of high pressure of the dust in the storage tank 1, part of the dust is guided into the pressure relief gas conveying pipe 5 and then into the storage material processing mechanism 6. During the process of guiding the dust into the storage material processing mechanism 6, part of the dust will stick to the inner wall of the pressure relief gas conveying pipe 5. When the pressure reduction is completed, the electric sliding rail power supply 53 is powered on to the electric sliding rail 52, so that the sliding ring 54 slides along the electric sliding rail 52 while rotating, and moves back and forth, thereby washing the dust sticking to the inner wall of the pressure relief gas conveying pipe 5, so that the inner wall of the pressure relief gas conveying pipe 5 remains clean, effectively preventing dust accumulation from affecting the pressure relief work of the breathing valve 4.

[0026] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A pressure relief device for a chemical transport ship, characterized in that: Includes a storage tank (1), a rupture disc device (2) is fixedly connected to the center of the top of the storage tank (1), and a protective device (3) and a breathing valve (4) are fixedly connected to the top of the storage tank (1) on both sides of the rupture disc device (2), and a pressure relief gas supply pipe (5) is connected to one side of the breathing valve (4), and a storage processing mechanism (6) is connected to the end of the pressure relief gas supply pipe (5) away from the breathing valve (4). The protective device (3) includes a protective device sliding tube (32), a protective device sliding hole (35) is provided on one side of the protective device sliding tube (32), a protective device fixing rod (34) is slidably connected to one side of the protective device sliding tube (32) through the protective device sliding hole (35), a sealing cover (31) is fixedly connected to one end of the protective device fixing rod (34) away from the protective device sliding tube (32), a limit groove (36) is provided at the bottom of the sealing cover (31), and a protective device limit block (33) is fixedly connected to the top of the protective device sliding tube (32).

2. The depressurization device for a chemical transport ship according to claim 1, characterized in that: The bottom of the sliding tube (32) of the protective device is fixedly connected to the storage tank (1), and the inner wall of the limiting groove (36) is slidably connected to the rupture disc device (2).

3. A pressure relief device for a chemical transport ship according to claim 2, characterized in that: The protective device sliding tube (32) includes a protective device tube body (323), a circular slider (325) is slidably connected to the inner wall of the protective device tube body (323), a first magnetic sheet (324) is fixedly connected to the bottom of the circular slider (325), a first spring (322) is fixedly connected to the bottom of the first magnetic sheet (324), and a second magnetic sheet (321) is fixedly connected to the bottom of the first spring (322).

4. A pressure relief device for a chemical transport ship according to claim 3, characterized in that: The protective device fixing rod (34) is slidably connected to the protective device tube (323), and one side of the circular slider (325) is fixedly connected to the protective device fixing rod (34).

5. A depressurization device for a chemical transport ship according to claim 4, characterized in that: The bottom of the protective device tube (323) is fixedly connected to the storage tank (1), and the bottom of the second magnetic sheet (321) is fixedly connected to the storage tank (1).

6. A pressure relief device for a chemical transport ship according to claim 5, characterized in that: The pressure relief gas pipe (5) includes a pressure relief gas pipe body (51). An electric slide rail (52) is fixedly connected to the bottom of the pressure relief gas pipe body (51). A sliding ring (54) is sleeved on the electric slide rail (52) and slidably connected to it. A second cleaning device fixing rod (55) is fixedly connected to one side of the sliding ring (54). An electric ring brush (56) is fixedly connected to the end of the second cleaning device fixing rod (55) away from the sliding ring (54). An electric slide rail power supply (53) is fixedly connected to one end of the electric slide rail (52).

7. A depressurization device for a chemical transport ship according to claim 6, characterized in that: The bottom of the pressure relief gas pipe body (51) is fixedly connected to the storage and handling mechanism (6), and the bottom of the electric slide rail power supply (53) is fixedly connected to the storage and handling mechanism (6).

8. A depressurization device for a chemical transport ship according to claim 7, characterized in that: The rupture disc device (2) includes a bottom limiting ring (22), a rupture disc (21) is fixedly connected to the top of the bottom limiting ring (22), a limiting ring (23) is fixedly connected to the top of the rupture disc (21), and a sealing groove (24) is provided on one side of the top of the bottom limiting ring (22).

9. A pressure relief device for a chemical transport ship according to claim 8, characterized in that: The limiting ring (23) is slidably connected to the inner wall of the limiting groove (36), and the inner wall of the sealing groove (24) is slidably connected to the sealing cover (31).

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